Two solids A and B of mass 1 kg and 2 kg respectively are moving with equal linear momentum. The ratio of their kinetic energies $\left(K \mathrm{E}_{-}\right)_A:\left(K \mathrm{E}_{-}\right)_B$ will be $\frac{A}{1}$, so the value of $A$ will be $\_\_\_\_$ .
